[Debian-med-packaging] Bug#1097626: poa: ftbfs with GCC-15

[Matthias Klose]

Package: src:poa
Version: 2.0+20060928-9
Severity: important
Tags: sid forky
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-15

[This bug is NOT targeted to the upcoming trixie release]

Please keep this issue open in the bug tracker for the package it
was filed for.  If a fix in another package is required, please
file a bug for the other package (or clone), and add a block in this
package. Please keep the issue open until the package can be built in
a follow-up test rebuild.

The package fails to build in a test rebuild on at least amd64 with
gcc-15/g++-15, but succeeds to build with gcc-14/g++-14. The
severity of this report will be raised before the forky release.

The full build log can be found at:
http://qa-logs.debian.net/2025/02/16/amd64exp/poa_2.0+20060928-9_unstable_gccexp.log.gz
The last lines of the build log are at the end of this report.

To build with GCC 15, either set CC=gcc-15 CXX=g++-15 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.

  apt-get -t=experimental install g++ 

GCC 15 now defaults to the C23/C++23 standards, exposing many FTBFS.
Other Common build failures are new warnings resulting in build failures
with -Werror turned on, or new/dropped symbols in Debian symbols files.
For other C/C++ related build failures see the porting guide at
http://gcc.gnu.org/gcc-15/porting_to.html

[...]
      |                                                     |
      |                                                     long unsigned int
main.c:183:3: note: in expansion of macro ‘CALLOC’
  183 |   CALLOC (input_seqs, max_input_seqs, LPOSequence_T *);
      |   ^~~~~~
./default.h:156:37: note: format string is defined here
  156 |     fprintf(stderr,"requested %d x %d bytes \n",(N),sizeof(ATYPE));   \
      |                                    ~^
      |                                     |
      |                                     int
      |                                    %ld
./default.h:197:22: warning: format ‘%d’ expects argument of type ‘int’, but argument 4 has type ‘long unsigned int’ [-Wformat=]
  197 |       fprintf(stderr,"requested %d x %d bytes \n",(NUM),sizeof(ATYPE));   \
      |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~       ~~~~~~~~~~~~~
      |                                                         |
      |                                                         long unsigned int
main.c:221:9: note: in expansion of macro ‘REALLOC’
  221 |         REALLOC (input_seqs, max_input_seqs, LPOSequence_T *);
      |         ^~~~~~~
./default.h:197:39: note: format string is defined here
  197 |       fprintf(stderr,"requested %d x %d bytes \n",(NUM),sizeof(ATYPE));   \
      |                                      ~^
      |                                       |
      |                                       int
      |                                      %ld
In file included from ./default.h:16:
main.c:225:30: warning: format ‘%s’ expects argument of type ‘char *’, but argument 3 has type ‘FILE *’ [-Wformat=]
  225 |       WARN_MSG(USERR,(ERRTXT,"Error reading PO list file %s.\nExiting",
      |                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  226 |                       po_list_file),"$Revision: 1.2.2.9 $");
      |                       ~~~~~~~~~~~~
      |                       |
      |                       FILE *
./black_flag.h:212:10: note: in definition of macro ‘WARN_MSG’
  212 | (sprintf MESSAGE,\
      |          ^~~~~~~
main.c:225:59: note: format string is defined here
  225 |       WARN_MSG(USERR,(ERRTXT,"Error reading PO list file %s.\nExiting",
      |                                                          ~^
      |                                                           |
      |                                                           char *
./default.h:197:22: warning: format ‘%d’ expects argument of type ‘int’, but argument 4 has type ‘long unsigned int’ [-Wformat=]
  197 |       fprintf(stderr,"requested %d x %d bytes \n",(NUM),sizeof(ATYPE));   \
      |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~       ~~~~~~~~~~~~~
      |                                                         |
      |                                                         long unsigned int
main.c:254:9: note: in expansion of macro ‘REALLOC’
  254 |         REALLOC (input_seqs, max_input_seqs, LPOSequence_T *);
      |         ^~~~~~~
./default.h:197:39: note: format string is defined here
  197 |       fprintf(stderr,"requested %d x %d bytes \n",(NUM),sizeof(ATYPE));   \
      |                                      ~^
      |                                       |
      |                                       int
      |                                      %ld
main.c:225:30: warning: ‘%s’ directive argument is null [-Wformat-overflow=]
  225 |       WARN_MSG(USERR,(ERRTXT,"Error reading PO list file %s.\nExiting",
      |                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./black_flag.h:212:10: note: in definition of macro ‘WARN_MSG’
  212 | (sprintf MESSAGE,\
      |          ^~~~~~~
main.c:225:58: note: format string is defined here
  225 |       WARN_MSG(USERR,(ERRTXT,"Error reading PO list file %s.\nExiting",
      |                                                          ^~
make[2]: Leaving directory '/build/reproducible-path/poa-2.0+20060928'
dh_auto_build: error: make -j8 "INSTALL=install --strip-program=true" poa returned exit code 2
make[1]: *** [debian/rules:21: override_dh_auto_build] Error 25
make[1]: Leaving directory '/build/reproducible-path/poa-2.0+20060928'
make: *** [debian/rules:10: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2